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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9097) Set HBASE_CLASSPATH before rest of the classpath
Date Wed, 31 Jul 2013 16:15:49 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9097?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13725376#comment-13725376
] 

Lars Hofhansl commented on HBASE-9097:
--------------------------------------

+1 from me.
I would like to find out about the previous rationale of placing the HBASE_CLASSPATH last,
though.
                
> Set HBASE_CLASSPATH before rest of the classpath
> ------------------------------------------------
>
>                 Key: HBASE-9097
>                 URL: https://issues.apache.org/jira/browse/HBASE-9097
>             Project: HBase
>          Issue Type: Bug
>          Components: scripts
>    Affects Versions: 0.98.0, 0.95.2, 0.94.11
>            Reporter: Jesse Yates
>            Assignee: Jesse Yates
>         Attachments: hbase-9097-v0.patch
>
>
> We encountered this when one of the hadoop test jars (specifically hadoop-mapreduce-client-jobclient-2.0.0-cdh4.3.0-tests.jar,
but that's beside the point) had an hdfs-site.xml. This clobbered the hdfs-site.xml that we
included on the classpath via HBASE_CLASSPATH in hbase-env.sh, meaning the master didn't start
in HA NN mode, because the proxy-provider wasn't found in the hdfs-site.xml from the test
jar (even though it was in our config file) because that was the first resolution of that
file.
> This should be a fairly simple fix in bin/hbase, but has some potentially wide-ranging
effects on existing installs that just 'happen' to work.
> Generally, I'd expect things set on the HBASE_CLASSPATH to take precedence over anything
else when starting the hbase daemon.

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